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Old December 7, 2021, 09:03 PM   #13
L. Boscoe
Senior Member
 
Join Date: October 30, 2021
Posts: 179
Load adjustment for plated vs coated bullets

I tried 4.5 of 231 behind plated 200 gr swc and coated 200 gr swc's and while
I haven't had time to chrono them, the felt recoil on the plated felt a tad stronger than the coated. I will be speed testing soon, but the trip to the range made me think I need to include a few more steps in the loads,
so 4.2, 4.4, 4.5 and 4.7 maybe even back to 4.0. I find that one needs to check the powder feed from time to time on the Dillon 550, measuring a dozen or so powder drops to get an average, even after say 200 rounds at one setting, it can creep 0.1g or so. Is that uncommon?
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